Reorganize pandas docs and mention to_pandas()
Reorganize pandas docs and mention to_pandas()

chunweiyuan/xarray,jhamman/xarray,rabernat/xray,markelg/xray,cpaulik/xray,pydata/xarray,rabernat/xray,clarkfitzg/xray,pydata/xarray,clarkfitzg/xray,markelg/xray,jhamman/xarray,drewokane/xray,pydata/xarray,petercable/xray,shoyer/xray,shoyer/xarray,hetland/xray,jhamman/xarray,cpaulik/xray,xray/xray,jcmgray/xarray,kjordahl/xray,kjordahl/xray,markelg/xray,hetland/xray,shoyer/xarray,jhamman/xray,NicWayand/xray